Benchmark - Sum from halved random numbers

halved_randoms.ms

st = time
result = 0
counter = 0

while counter < 3000000
	result = (result + rnd) / 2
	counter = counter + 1
end while

print result
print "Took: " + round(time - st,2) + " seconds"

halved_randoms.py

from datetime import datetime
from random import random

st = datetime.now()
result = 0
counter = 0

while counter < 3000000:
    result = (result + random()) / 2
    counter = counter + 1

print(result)
print("Took: " + str(round((datetime.now() - st).total_seconds(), 2)) + " seconds")

halved_randoms.rb

st = Time.now
result = 0
counter = 0

while counter < 3000000
    result = (result + rand) / 2
    counter = counter + 1
end

e = Time.now

puts(result)
puts("Took: " + ((e-st).round(2)).to_s + " seconds")

halved_randoms.st

"Put this in some class or evaluate in a Workspace / Playground except for the return line"
run
	| st et duration rnd result counter |
	counter := 0.
	result := 0.
	rnd := Random new.
	st := DateAndTime now.

	[ counter < 3000000 ] whileTrue: [ 
		result := result + rnd next / 2.
		counter := counter + 1 ].

	et := DateAndTime now.
	duration := ((et - st) asMilliSeconds / 1000 round: 2) asFloat.

	^ 'Took: ' , duration asString.

As far as I know Python and Ruby (I might be wrong with Ruby) don't do JITting, Pharo most probably does (depends on the VM used).